<![CDATA[Children's limited letter recognition skills remain a significant challenge in early childhood education, primarily due to the limited use of interactive learning media that accommodate children's developmental characteristics. This condition often leads to low learning engagement, reducing children's motivation and participation during classroom activities. This study aimed to develop, evaluate, and analyze the feasibility and effectiveness of the Smart Letter Board learning media in improving letter recognition skills among children in Group B of early childhood education. The study employed a Research and Development (R&D) approach using the ADDIE model, which consists of the Analyze, Design, Develop, Implement, and Evaluate stages. The participants included 25 children in Group B during the effectiveness testing phase, while the feasibility evaluation involved instructional design experts, subject matter experts, media experts, and children participating in individual and small-group trials. Data were collected through tests, observations, and questionnaires using letter recognition assessment sheets and expert validation instruments. The data were analyzed using descriptive quantitative analysis and a paired-samples t-test. The findings indicated that the Smart Letter Board met the criteria of being highly feasible based on expert validation and user evaluations and was effective in improving children's letter recognition skills, as evidenced by a statistically significant difference between pretest and posttest scores. It can be concluded that the Smart Letter Board is an innovative learning medium that effectively supports the development of letter recognition skills in early childhood and provides teachers with an engaging, interactive, and meaningful instructional alternative.]]>
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